The dominant intellectual method of medieval European universities from roughly 1050 to 1350, organized around the systematic reconciliation of Christian theology with ancient philosophy — above all Aristotle — through rigorous logical analysis. Scholasticism produced the first institutionalized tradition of rational inquiry in the Western world and established the intellectual frameworks that both shaped and were disrupted by the Scientific Revolution.
In the 13th century, the most dangerous book in Europe was Aristotle's Physics. The problem was not that it advocated heresy — it was that it explained the natural world without reference to God, and did so with extraordinary intellectual power. The scholars who read it faced a genuine crisis: reject the most rigorous natural philosophy available, or reconcile it with Christian theology at the risk of being consumed by it. The intellectual tradition they built in response — scholasticism — was not a compromise. It was a systematic attempt to think through what reason could establish and what faith required, and to determine whether the two could coexist. That attempt produced the first universities, the first philosophy of science, and some of the most technically demanding intellectual work in Western history.